package chapter03;
class Studentx{
    String name;
    int age;
    void read(){
        System.out.println("大家好,我是"+name+",年龄"+age);
    }
}


public class Example02 {
    public static void main(String[] args) {
         Studentx stu1=new Studentx();
         Studentx stu2=null;
         stu2=stu1;
         stu1.name="小明";
         stu1.age=20;
         stu2.age=50;
         stu1.read();
         stu2.read();
    }
}
